Sterilizing container for liquids



G. A. KRAUSE STERILIZING CONTAINER FOR LIQUIDS Oct, 259 i932.

Filed May 9, 1929 ZQWMWL Patented Oct. 25, 19.32

UNITED STATES PATENT OFFICE GEORG A. KBAUSE, OF MUNICH, GERMANY,ASSIGNOR TO KATADYN, INC., 0F DOVER, DELAWARE, A COBPOBATIGN OF DELAWAREand which are oligo-d STERILIZING ONTACNEB FOR LIQUIITS Appiicationfiled lay 9, 1929, Serial No.

This invention relates to a sterilizing container for liquids andconsists in providing the container lwith interchangeable devices, whichare in connection with the container amically active or containoligo-dynamica ly active substances.

Thus, for example, individualparts of the container itself, such as thebottom, may be made interchangeable and may be provided witholigo-dynamically active metals or metal compounds, for example by beingcoated therewith. A prefererd embodiment of the invention consists, forexample, in employing thimbles filled or partially filled with anoligo-dynamically active substance or consisting of an oligo-dynamicallyactive metal or lined with aligo-dynamically active substances, whichthimbles are interchangeably introduced into the container. Aparticularly advantageous embodiment of the invention is one in whichthe said thimbles are interchangeably screwed into the walls of thecontainer or are interchangeably disposed in the stopper or closuremember of the container.

It has already been proposed to prepare sterilizing containers bydepositing silver gel on the inner wall of a porous container.lSontainers of this kind, however, are attended with considerabledrawbacks, such as the poor adhesion of the silver gel deposit on thewalls of the container, in consequence of which the depositeasilybecomes detached from the walls of the container when the latter isemployed for purposes of sterilization.

The silver gel in this case not only pollutes the liquid, for examplewater, undergoing sterilization, but is lost so that the container nolonger has Aa sterilizing action. It is scarcely possible, in this case,to secure an effective connection between the inner wall of thecontainer and the oligodynamically active substances, so that losses inoligo-dynamically active substances are incurred and the containerbecomes useless. A further drawback in the known sterilizing containers,lies in the fact that the porous substance employed for the waterbottles, absorbs the silver gel and frequently blackens on the outsideas soon as the silver comes into Contact 861,705, and in Germany Hay 19,1998.

grammatic drawing in which Figure 1 is a cross section partly inelevation illustrating to the invention Figure 2 is a similar viewillustrating a modification one construction according Flgure 3' is asimilar view illustrating a' 1g further modification.

Figure 1 represents a water bottle, preferably of porous ceramicmaterial, which is provided in the wall 1 with a socket 2 provided withal thread 3. Into erably extends to the bottom of the bottle and alsoconsists of porous material. The thimble 4 is hollow inside and lilledwith an oligo-dynamically active substance 5, which a0 stance 5 in thethimble to be removed, for

example for purposes of cleaning or chan ing. In place of porousmaterial the thimb e may itself also consist of oligo-dynamically activematerial or be provided with a coating of oligo-dynamically activesubstance.

Figure 2 represents a modification of the invention in the form of aDewar container or thermos iask 8 in which the thimble 9, which issimilar in construction to the thimble 4, is disposed in the stopper 10.

Figure 3 represents a field flask 11 provided with a screwed closuremember 12. A sterilizing element 13, for example in the form of athimble is connected, preferably nter-changeably, with the screwedclosure disposing the oligou be easily cleaned, or if .o

this threaded l745 socket a thimble 4 is introduced, which prefissecured against member 12. A thimbie-liize tube 14, cosed at its bottomend, also projects into the 'eld flask and is permanently connectedtherewith. This tube serves for the reception of the screwed closuremember 12 and sterilizer 13, when the latter is not in use. When thesterilizer 13 is in the tube 1li the eld flask the loss of liquid bymeans of the ordinary field esk stopper 15, which is screwed into thestorage tube 14. when the sterilizing member 13 is in use.

I claim:

1. In a sterilizing apparatus oi the cess described e closed containerbevirig weils, an oligodynamicaily active steriiizinfr eie ment adaptedto be projected throng the walls, means to detachably secure seid stermiizing element to seid walls in iiquid tight relation thereto, andineens to introduce liquid into said container to contact With saidsterilizirig device, end means to support said sterilizing device imseid container end out of Contact with seid liquid whereby seidsterilizing device may be revived.

2. A sterilizing epperetus es claimed im claim 1 in which thesteriiizimg element is an elongated tubular element coated with mi oliodynemiceliy estive eiememt.

n testimony vwheres/r 1i my' signature.

A.. KRAUSW.

